ScootsUSA Mini Turbine Air Horn Brace yourself for a blast! If safety is important to you, listen up. This super-loud horn will make drivers pay attention to your little scooter like it's a semi! This low tone horn kicks out 133dB of sound! For comparison, a gun blast is about 140 dB... It's up to you to figure out the best way to mount it to your scooter. All it takes is 12v power and a good mounting point. Comes with two mounting brackets. Dimensions: approx. 3 x 3.5 x 3 Please note: these are not made by Stebel.